You do need a pretty substancial bankroll to scalp. You surely aren't going to make money at it betting a hundred bux a game.
With this particular number you would have definately had to take a lead. In these cases you are "gambling" obviously, since you aren't finding the numbers simultaneously anywheres. So that greatly reduces the amount you can play, as you are taking a risk.
This year has been hard, unless you do take leads. Most of the better ones have been on totals. But agin, you had to take a small position on the overnight number and odds.
I figure once basketball gets over the scalps will become more commonplace, they usually do. While baseball bettors are a uniquie breed, that basketball money is still being filtered away.